1. Disengage the battery. To do this, open the hood of your Cabriolet and locate the negative battery terminal (marked with a "-"). Use a wrench to loosen the nut that holds the terminal in place, and then disconnect the terminal.
2. Locate the fuel pump. The fuel pump is located underneath the rear seat of your Cabriolet. To access it, you must remove the rear seat. To do this, pull up on the front edge of the seat cushion, and then slide it forward. Once the cushion is removed, you will see two bolts holding the seatback in place. Remove these bolts, and then lift the seatback up and out of the car.
3. Disconnect the fuel lines. There are two fuel lines that connect the fuel pump to the fuel tank. To disconnect them, use a flat-head screwdriver to pry open the clips that hold them in place. Be careful not to damage the fuel lines.
4. Remove the fuel pump. Once the fuel lines are disconnected, you can remove the fuel pump. To do this, use a wrench to loosen the bolts that hold the pump in place. Be careful not to drop the fuel pump, as it is heavy.
5. Install the new fuel pump. To install the new fuel pump, simply reverse the steps listed above. Be sure to tighten all of the bolts securely, and reconnect the fuel lines properly.
6. Reconnect the battery. Once the new fuel pump is installed, you can reconnect the battery. To do this, simply reconnect the negative terminal that you disconnected in step 1.
7. Start the car. Once the battery is reconnected, you can start the car. If the car starts and runs smoothly, you have successfully replaced the fuel pump.
